They are capable of tremendous destruction with wind speeds up to 250 mph or more.
Damage paths can be in excess of 1 mile wide and 50 miles long.
Thunderstorms that develop in warm, moist air in advance of eatsward-moving cold fronts are what cause tornadoes.
WEAK TORNADOES
69% of all tornadoes
Less than 5% of all tornado deaths
Lifetime 1-10+ minutes
Winds less than 110 mph
STRONG TORNADOES
29% of all tornadoes
Nearly 30% of all tornado deaths
Could last 20 minutes or longer
Winds 110-205 mph
VIOLENT TORNADOES
2% of all tornadoes
70% of all tornado deaths
Lifetime can exceed 1 hour
HOW TORNADOES FORM
Weather Myths ~ When a pig carries sticks around in its mouth to build shelter, precipitation will come.
~ When a cow lies down, bad weather is coming.
~ If a groundhog sees his shadow on Ground Hog Day (February 2), the weather will remain cold for six more weeks.
~When pine cones close, bad weather is coming.
~ A ring around the moon means rain or snow is coming.
~ Flowers of the morning glory and scarlet pimpernel open when it's sunny, and close when rain is due.
~The first frost in autumn will be exactly six months after the first thunderstorm of spring.
~Ditches and manure piles smell stronger just before it rains.
~Red skies in the morning sailors take warning, Red skies at night sailors' delight.
~ Rainbows in the morning, gives you fair warning.
~ When stars begin to huddle, the earth will become a puddle. Tornadoes Myths: ~Open windows before tornadoes to equalize pressure.~ The low air pressure around a tornado will make buildings explode.
~ Areas near Mountains, Rivers, and lakes are safe.
SELF REFLECTION This is our second WikliSpace we have made and you would think that we would be bored with it but we were not bored at all. We learned a lot of new things such as the things you've seen on this and page and the others. We believe that these WikiSpaces help us learn more about the topic than just learning from the book. We wouldn't mind making another WikiSpace on another topic.
Tornadoes
WEAK TORNADOES
STRONG TORNADOES
VIOLENT TORNADOES
HOW TORNADOES FORM
Weather Myths
~ When a pig carries sticks around in its mouth to build shelter, precipitation will come.
~ When a cow lies down, bad weather is coming.
~ If a groundhog sees his shadow on Ground Hog Day (February 2), the weather will remain cold for six more weeks.
~When pine cones close, bad weather is coming.
~ A ring around the moon means rain or snow is coming.
~ Flowers of the morning glory and scarlet pimpernel open when it's sunny, and close when rain is due.
~The first frost in autumn will be exactly six months after the first thunderstorm of spring.
~Ditches and manure piles smell stronger just before it rains.
~Red skies in the morning sailors take warning, Red skies at night sailors' delight.
~ Rainbows in the morning, gives you fair warning.
~ When stars begin to huddle, the earth will become a puddle.
Tornadoes Myths:
~Open windows before tornadoes to equalize pressure. ~ The low air pressure around a tornado will make buildings explode.
~ Areas near Mountains, Rivers, and lakes are safe.
WORK CITED
www.nssl.noaa.gov/edu/safety/tornadoguide.html
**http://library.thinkquest.org/3805/myths/myth.htm**
SELF REFLECTION
This is our second WikliSpace we have made and you would think that we would be bored with it but we were not bored at all. We learned a lot of new things such as the things you've seen on this and page and the others. We believe that these WikiSpaces help us learn more about the topic than just learning from the book. We wouldn't mind making another WikiSpace on another topic.